AD 78-25-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-10-10 | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F, and -40 Airplanes |
| aircraft | The Boeing Company | DC-10-10F | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F, and -40 Airplanes |
| aircraft | The Boeing Company | DC-10-30 | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F, and -40 Airplanes |
| aircraft | The Boeing Company | DC-10-30F (KC-10A, KDC-10) | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F, and -40 Airplanes |
| aircraft | The Boeing Company | DC-10-40 | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F, and -40 Airplanes |
Unsafe Condition
The seatback tray table retention clip can rotate to a position that prevents automatic deployment of oxygen masks during depressurization.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Modify the Universal Oil Products Company Model 900-400-C3C seats through Serial No. 3860 in accordance with Service Bulletin No. 25-494. Equivalent modifications may be used if approved by the Chief, Aircraft Engineering Division, FAA, Western Region.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 30 days after the effective date of this AD, unless already accomplished
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F, and -40 airplanes with Universal Oil Products Company Model 900-400-C3C seats through Serial No. 3860 installed
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Seats
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_78-25-09.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 78-25-09 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F, and -40 Airplanes Subject: Seats Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/22/1978 Make: The Boeing Company Model: DC-10-10 | DC-10-10F | DC-10-30 | DC-10-30F (KC-10A, KDC-10) | DC-10-40 Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 78-25-09 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3372 AD NUMBER: 78-25-09 SUBJECT HEADING: Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F, and -40 Airplanes ACTION: SUMMARY: DATES: Effective December 22, 1978. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 78-25-09 MCDONNELL DOUGLAS: Amendment 39-3372. Applies to DC-10-10, -10F, -30, -30F, and -40 airplanes certificated in all categories which have Universal Oil Products Company Model 900-400-C3C seats through Serial No. 3860, installed. Compliance required within the next 30 days after the effective date of this AD, unless already accomplished. To assure that the seatback tray table retention clip cannot be rotated to a position in which it prevents automatic deployment of oxygen masks during depressurization, accomplish the following: (a) Modify the Universal Oil Products Company Model 900-400-C3C seat through Serial No. 3860, in accordance with Universal Oil Products Service Bulletin No. 25-494, original issue dated September 18, 1978. (b) Equivalent modification may be used when approved by the Chief, Aircraft Engineering Division, FAA, Western Region. (c) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of the modifications required by this AD. This amendment becomes effective December 22, 1978. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_78-25-09.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 78-25-09 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F, and -40 Airplanes Subject: Seats Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/22/1978 Make: The Boeing Company Model: DC-10-10 | DC-10-10F | DC-10-30 | DC-10-30F (KC-10A, KDC-10) | DC-10-40 Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 78-25-09 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3372 AD NUMBER: 78-25-09 SUBJECT HEADING: Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F, and -40 Airplanes ACTION: SUMMARY: DATES: Effective December 22, 1978. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 78-25-09 MCDONNELL DOUGLAS: Amendment 39-3372. Applies to DC-10-10, -10F, -30, -30F, and -40 airplanes certificated in all categories which have Universal Oil Products Company Model 900-400-C3C seats through Serial No. 3860, installed. Compliance required within the next 30 days after the effective date of this AD, unless already accomplished. To assure that the seatback tray table retention clip cannot be rotated to a position in which it prevents automatic deployment of oxygen masks during depressurization, accomplish the following: (a) Modify the Universal Oil Products Company Model 900-400-C3C seat through Serial No. 3860, in accordance with Universal Oil Products Service Bulletin No. 25-494, original issue dated September 18, 1978. (b) Equivalent modification may be used when approved by the Chief, Aircraft Engineering Division, FAA, Western Region. (c) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of the modifications required by this AD. This amendment becomes effective December 22, 1978. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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